40472839 has 8 divisors (see below), whose sum is σ = 44649360. Its totient is φ = 36379200.

The previous prime is 40472833. The next prime is 40472849. The reversal of 40472839 is 93827404.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40472839 - 2¹³ = 40464647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40472798 and 40472807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40472833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19692 + ... + 21649.

It is an arithmetic number, because the mean of its divisors is an integer number (5581170).

Almost surely, 2^40472839 is an apocalyptic number.

40472839 is a deficient number, since it is larger than the sum of its proper divisors (4176521).

40472839 is a wasteful number, since it uses less digits than its factorization.

40472839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41441.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 40472839 is about 6361.8267030783. The cubic root of 40472839 is about 343.3374862559.

It can be divided in two parts, 4047 and 2839, that added together give a palindrome (6886).

The spelling of 40472839 in words is "forty million, four hundred seventy-two thousand, eight hundred thirty-nine".